Abstract
Cobalt tetraaminophthalocyanine was anchored covalently on carbon fiber using an easy and moderate one-step deamination method to obtain a supported heterogeneous catalyst (CoPc-CF). Studies were conducted to understand the CoPc-CF electrode’s electrochemical activity, and some typical organic contaminants including dyes, phenols, and carbamazepine could be removed efficiently in this system. This system exhibited a relatively high electrochemical activity over a wide pH range, and provided a nonradical pathway, which was completely different from the traditional electro-Fenton system. The CoPc-CF electrode has a high electrocatalytic activity over a wide reactant concentration range. Repetitive tests showed that CoPc-CF could maintain a high electrocatalytic activity over several cycles. The content of electrogenerated H2O2 during the electrocatalysis process was determined using a photometric method in which N,N-diethyl-phenylenediamine was oxidized by a peroxidase-catalyzed reaction. The possible reaction mechanism was proposed from an electron paramagnetic resonance spin-trap technique. These results show that the CoPc-CF electrode has potential application in wastewater treatment.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant numbers: 51133006 and 51103133); the Textile Vision Science & Education Fund; the 521 Talent Project of ZSTU; Zhejiang Provincial Natural Science Foundation of China (Grant numbers: LY14E030013 and LY14E030015); and the Public Welfare Technology Application Research Project of Zhejiang Province (Grant number: 2015C33018).
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Liu, M., Xia, H., Lu, W. et al. Electrocatalytic degradation of organic contaminants using carbon fiber coupled with cobalt phthalocyanine electrode. J Appl Electrochem 46, 583–592 (2016). https://doi.org/10.1007/s10800-016-0939-z
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DOI: https://doi.org/10.1007/s10800-016-0939-z